How can I get rid of a dysbiosis I got from a probiotic (e-coli) ?

Symptoms are fatigue, nervosity and loose foul-smelling green stools. I identified mutaflor as the culprit when earlier this year when I found out that the symptoms appeared systematically about 48h after each capsule.

The symptoms got away when I stopped taking the capsules. But they started again when I tried mutaflor in liquid solution, and they haven't stopped since :/

My guess is there's a dysbiosis in my intestine,

I found out that prebiotics and probiotics help a lot but my symptoms always come back 48h after taking those.